I yet own a Lowrance Elite DSI 5.
While my new boat is beiing build I also want to install a AIS, but this can not be connected with the Elite serie. So I decided to buy a Lowrance HDS 5 2nd Gen and connect it with a (small) NMEA 2000 with the AIS.
As seen at YT video's it should be a piece of cake...
I will let you know if it is installed...
The elite i go to use only as a depth monitor...
I need: 2 terminators, 1 male and 1 female for the ends
three T-pieces, one powercable and two dropdown lines.
Than you got a network.